Coping strategy of excessive water reduction rate

When faced with the problem that the water reduction rate is too high and the water consumption is sensitive and difficult to control, we can seek solutions from the two aspects of production and compounding.

In terms of production, the following strategies are recommended:

1. Use a comprehensive mother liquor. The mother liquor has both slump retention and water reduction functions, which helps to balance the performance of concrete and reduce the sensitivity of water reduction rate.

2.  Use high molecular weight monomer to make water reducer mother liquor. The high molecular weight monomer helps to improve the adsorption capacity of water reducing agent, making the water reducing agent more stable and reducing the fluctuation of water consumption.

3. Increase the amount of chain transfer agent. Chain shifters can help regulate the chain structure of polymers to further improve water reduction properties.

4. Mix two mother fluids. By adjusting the ratio of the two mother fluids, a balance point can be found to reduce the sensitivity of the water reduction rate.

In terms of compounding, the following suggestions may be considered:

1. Avoid the use of sensitive small materials, such as sodium glucodium, K12, etc., which may increase the volatility of water reduction rate.

2. Select sticky air entraining agents, such as electrochemical, AES, animal and plant glue, etc. These air entraining agents can not only provide good air entraining effect, but also increase the viscosity of concrete and help to stabilize the water consumption.

3. The use of soft retarding agents, such as citric acid, coke, sodium tripolyphosphate, etc. These retardants can delay the setting time of the concrete, giving the construction personnel more operating time.

4. Appropriate addition of thickening agents, such as low unit antelope methyl cellulose, liquid polyvinyl alcohol, maltodextrin, etc. These thickeners can increase the viscosity of concrete and help stabilize the flow of concrete.

To sum up, through reasonable production and compounding strategies, we can effectively solve the problem that the water reduction rate is too high and the water consumption is difficult to control, so as to optimize the performance of concrete and meet the construction needs.